Medium severity · published Dec 27, 2019
CVE-2019-20021
A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file
5.5
CVSS
1.1%
EPSS
No
On KEV
Description
A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
30; 31 · source: NVD
UP
Upx · Upx
3.95 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-20021
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-20021
Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html
Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html
Exploit
https://github.com/upx/upx/issues/315
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/
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